r4 - 2008-02-22 - 16:47:29 - SteveKosteckeYou are here: NTP >  Support Web > OtherImplementations > OpenNTPD
NTP users are strongly urged to take immediate action to ensure that their NTP daemons are not susceptible to being used in distributed denial-of-service (DDoS) attacks. Please also take this opportunity to defeat denial-of-service attacks by implementing Ingress and Egress filtering through BCP38.

ntp-4.2.8p11 was released on 27 February 2018. It addresses 2 low-/medium-, 1 informational-/medium-, and 2 low-severity security issues in ntpd, 1 medium-severity security issue in ntpq, and provides over 65 non-security bugfixes and other improvements over 4.2.8p10.

Please see the NTP Security Notice for vulnerability and mitigation details.

Are you using Autokey in production? If so, please contact Harlan - he's got some questions for you.
REFACTOR See OpenNTPDDev for discussion of this topic.

13.4. OpenNTPD

OpenNTPD is an independent partial re-implementation of NTP. It aims to be a simple, reliable, and highly secure implementation.

Related Topics: the OpenNTPD project site

Limitations

  • OpenNTPD does not have micro-second accuracy as a design goal
  • Unicast only; Multicast/Manycast/Broadcast modes not supported
  • No suport for NTP Authentication
  • No support for Reference Clocks
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